As a matter if interest Elliott Wave Theory would place the OEX near the top of Wave 3 of an impulse wave starting at the 384.96 low, with a likely top near 591.00. However the wave could also extend to 655.00. Hence shorting at 591.00 without other evidence of exhaustion could be a coyote-and-roadrunner situation.
valley...you could be right, but if are a swing trader and you did go short off the target line as I show in the first post, I think you would have been pretty safe after the sell off this afternoon with your stop at at least a break even.